543045321 has 96 divisors (see below), whose sum is σ = 1013655552. Its totient is φ = 272471040.

The previous prime is 543045313. The next prime is 543045397. The reversal of 543045321 is 123540345.

It is not a de Polignac number, because 543045321 - 2³ = 543045313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (543045311) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1853251 + ... + 1853543.

It is an arithmetic number, because the mean of its divisors is an integer number (10558912).

Almost surely, 2^543045321 is an apocalyptic number.

It is an amenable number.

543045321 is a deficient number, since it is larger than the sum of its proper divisors (470610231).

543045321 is a wasteful number, since it uses less digits than its factorization.

543045321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 543045321 is about 23303.3328303056. The cubic root of 543045321 is about 815.8532076273.

Adding to 543045321 its reverse (123540345), we get a palindrome (666585666).

The spelling of 543045321 in words is "five hundred forty-three million, forty-five thousand, three hundred twenty-one".